# ---
# title: 1616. Split Two Strings to Make Palindrome
# id: problem1616
# author: Tian Jun
# date: 2020-10-31
# difficulty: Medium
# categories: Two Pointers, String, Greedy
# link: <https://leetcode.com/problems/split-two-strings-to-make-palindrome/description/>
# hidden: true
# ---
# 
# You are given two strings `a` and `b` of the same length. Choose an index and
# split both strings **at the same index** , splitting `a` into two strings:
# `aprefix` and `asuffix` where `a = aprefix + asuffix`, and splitting `b` into
# two strings: `bprefix` and `bsuffix` where `b = bprefix + bsuffix`. Check if
# `aprefix + bsuffix` or `bprefix + asuffix` forms a palindrome.
# 
# When you split a string `s` into `sprefix` and `ssuffix`, either `ssuffix` or
# `sprefix` is allowed to be empty. For example, if `s = "abc"`, then `"" +
# "abc"`, `"a" + "bc"`, `"ab" + "c"` , and `"abc" + ""` are valid splits.
# 
# Return `true` _if it is possible to form_ _a palindrome string, otherwise
# return_`false`.
# 
# **Notice** that `x + y` denotes the concatenation of strings `x` and `y`.
# 
# 
# 
# **Example 1:**
# 
#     
#     
#     Input: a = "x", b = "y"
#     Output: true
#     **Explaination:** If either a or b are palindromes the answer is true since you can split in the following way:
#     aprefix = "", asuffix = "x"
#     bprefix = "", bsuffix = "y"
#     Then, aprefix + bsuffix = "" + "y" = "y", which is a palindrome.
#     
# 
# **Example 2:**
# 
#     
#     
#     Input: a = "abdef", b = "fecab"
#     Output: true
#     
# 
# **Example 3:**
# 
#     
#     
#     Input: a = "ulacfd", b = "jizalu"
#     Output: true
#     **Explaination:** Split them at index 3:
#     aprefix = "ula", asuffix = "cfd"
#     bprefix = "jiz", bsuffix = "alu"
#     Then, aprefix + bsuffix = "ula" + "alu" = "ulaalu", which is a palindrome.
#     
# 
# **Example 4:**
# 
#     
#     
#     Input: a = "xbdef", b = "xecab"
#     Output: false
#     
# 
# 
# 
# **Constraints:**
# 
#   * `1 <= a.length, b.length <= 105`
#   * `a.length == b.length`
#   * `a` and `b` consist of lowercase English letters
# 
# 
## @lc code=start
using LeetCode

## add your code here:
## @lc code=end
